The solution for stabilizing and improving evaporator performance
Control stabilization with BrainWave
ANDRITZ BrainWave is a patented advanced controller that outperforms traditional Proportional-Integral-Derivative (PID) control because of its two main components: an adaptive model and a predictive controller. BrainWave builds its own live models during normal plant operations, a powerful feature not offered by traditional Model Predictive Control (MPC) systems.
BrainWave’s predictive controller accurately forecasts process responses and accounts for multiple objectives. It adapts to process conditions, such as changes in production rate, keeping the process on target. BrainWave can also accept measured disturbance inputs, like raw materials properties, and takes corrective action before the process is pushed off target (PID, by comparison, must wait for the error to occur and then react).
BrainWave easily integrates with existing control systems and its patented Laguerre technology means an average implementation time of just a few weeks. Best of all, the plant’s own staff can support and deploy BrainWave.
Control stabilization for evaporation plants
BrainWave reduces energy load on evaporators and improves performance. Excessive costs and suboptimal results typically plague this area of the plant. Many of the loops in a typical plant run in manual or cycle around the target due to long time delays and changing loop responses. BrainWave closes loops and develops response models of the solids, effect level, boiling point rise, and other specified loops based on the control actions and system responses observed during normal operation of the evaporation plant.
BrainWave then precisely controls liquor solids, taking into account the dead time while also including measured disturbances like incoming steam pressure, inlet weak black liquor percent solids, and production rate.